B1A3D
B1A3D-SIREN BATTERY TAMPER / LOSS OF POWER SUPPLYWHEN MONITORED
Continuously with the VTSS armed.
SET CONDITION
If the ITM detects incorrect voltage at the siren this code will set.
POSSIBLE CAUSES
- Harness tampering/intermittent condition
- Siren ground open
- Siren
DIAGNOSTIC TEST
1. INSPECT SIREN HARNESS
Inspect the wiring harness to the siren for any signs of tampering or intermittent condition.
Q: Were there any problems found?
YES: Repair wiring as necessary.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 2
2. DETERMINING IF DTC IS CURRENT
With a scan tool, read and record DTC(s).
With the scan tool, clear DTC(s).
Turn the ignition off and remove the key from the ignition.
Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.
Disarm the VTSS.
Using the scan tool, read DTC(s).
Q: Does the DTC reset?
YES: Go To 3
NO: DTC is not active at this time. Test complete.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
3. CHECK THE FUSED B(+) CIRCUIT AT THE SIREN
Turn the ignition off.
Disconnect the Siren connector.
Using a 12-volt test light connected to ground, check the Fused B(+) circuit at the siren connector.
Q: Does the test light illuminate brightly?
YES: Go To 4
NO: Repair the Fused B(+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
4. CHECK THE GROUND CIRCUIT AT THE SIREN
Using a 12-volt test light connected to 12-volts, check the Ground circuit at the siren connector.
Q: Does the test light illuminate brightly?
YES: Replace the Siren.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test